Forms Validation with Angular made easy! Angular-Validation is an angular Directive/Service with locales (language translation) with a very simple approach of defining your validation directly within your element to validate (input, textarea, etc) and...that's it!!! The Directive/Service will take...
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Validation attributes that can be used in any .NET 4.0 project to supplement the existing Data Annotations attributes.
If you are using MVC3 and also want client validation, use the DataAnnotationsExtensions.MVC3 package.

CuttingEdge.Conditions is a library that helps developers to write fluent pre and postcondition validations in their C# 3.0 and VB.NET 9.0 code base.
Writing these validations is easy and it improves the readability and maintainability of code.